Do not remove latex log/aux files on error.

Author: kpeeters

cmake/version.cmake

@@ -1,7 +1,7 @@
 set(CADABRA_VERSION_MAJOR 2)
 set(CADABRA_VERSION_MINOR 3)
 set(CADABRA_VERSION_PATCH 6)
-set(CADABRA_VERSION_TWEAK 2)
+set(CADABRA_VERSION_TWEAK 3)
 set(COPYRIGHT_YEARS "2001-2020")
 math(EXPR SYSTEM_BITS "${CMAKE_SIZEOF_VOID_P} * 8")
 find_program(GIT git PATHS ${GIT_DIR})

frontend/common/TeXEngine.cc

@@ -480,10 +480,6 @@ void TeXEngine::convert_set(std::set<std::shared_ptr<TeXRequest> >& reqs)
 	                       );
 	auto latex_exit_status=latex_proc.get_exit_status();
 
-	erase_file(tmppath+".aux");
-	erase_file(tmppath+".log");
-	erase_file(tmppath+".out");
-
 	std::string err=handle_latex_errors(latex_stdout+latex_stderr, latex_exit_status);
 	setenv("TEXINPUTS", oldtexinputs.c_str(), 1);
 
@@ -501,6 +497,10 @@ void TeXEngine::convert_set(std::set<std::shared_ptr<TeXRequest> >& reqs)
 		throw TeXException(err);
 		}
 
+	erase_file(tmppath+".aux");
+	erase_file(tmppath+".log");
+	erase_file(tmppath+".out");
+
 	erase_file(tmppath+".tex");
 
 	// Convert the entire dvi file to png files.